Question

What is the surface area of a sphere with a radius of 30 m?

1,800π m2
90,000π m2
3,600π m2
900π m2

Answer 1

@peachpi i cant remember how to do this..

Answer 2

A = 4πr² plug in 30 for r

Answer 3

surface area of sphere = 4 pi r^2

Answer 4

i thought i tried that but kept getting the wrong answer.. 4*3.14*30^2=11304

Answer 5

the π is in your answer choices, so don't include it in the multiplication. Just do 4*30² and stick π at the end of that number

Answer 6

oh thats what got me confused okay, thank you